MasterKey vs Smart NFC Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MasterKey
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- Let you feel the convenience of keyless opening, and can manage all your keys at the same time. - The dual-frequency function automatically recognizes the properties of the door lock and then opens the door with the corresponding key.
Smart NFC Tools
Easily read, inspect, and modify NFC tags with this intuitive tool. Write to tags in various formats to trigger actions like opening websites or making calls. Prioritizes user privacy by operating entirely offline.
- Read NFC tag content
- Inspect and modify NFC tags
- Erase, lock, and copy tags
- Write NFC tags in various formats
- Trigger phone calls or open websites
- 100% offline operation
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Smart NFC Tools is the most accessible and easy to use NFC Reader and Writer for mobile devices! With a simple user interface and powerful tools you can interact with NDEF-Formatted NFC cards without any external hardware! - Read, Inspect and modify: Read a tag by touching the back of your device against it and Smart NFC Tools will show you a full report on the tag's content and give you options such as erase, lock and copy. It's super easy! - Write in many formats: Smart NFC Tools enables you to write NFC tags in popular formats that allow for custom interactions such as opening a website or triggering a phone call just by touching the tag with a compatible device! - Note about privacy: Smart NFC Tools works 100% offline, without any personal or content data being sent to an external server or third party server. Your privacy is our priority! Embrace the world of NFC technologies using your phone or tablet! Smart NFC Tools is now available for all iOS devices!
Screenshots
Verdict
The clearest difference is in-app purchases: MasterKey at none against Smart NFC Tools's 1. MasterKey also leads on iOS requirement (9.0 vs 15.6). Smart NFC Tools's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Smart NFC Tools sells 1 one-off in-app purchase. MasterKey asks for nothing beyond the download.
MasterKey ships an update every 3 weeks, Smart NFC Tools weekly. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.
| Parameter | MasterKey | Smart NFC Tools |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.6 (476 ratings) — better |
| Positive reviews | — | 30.3% of reviews |
| Number of ratings | — | 476 — better |
| Update frequency | Every 3 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 2 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | SMARTCHIP MICROELECTRONICS CORP. | Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA. |
Bugs and requests
MasterKey
Not enough reviews yet to summarise bugs or requests.
Smart NFC Tools
Reported bugs
6 issues- Doesn't work to save contact card
- App glitches
- Doesn't work to read card and fob
- Paid for unlock, but restore doesn't work after iOS update
- Paid for ability to lock tags, but feature does not work
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- App not working after 15 minutes, even after purchase
Requested features
2 requests- Add social media to chips
- Ability to add multiple items to card after paying
In-app purchases
MasterKey
No in-app purchases
Smart NFC Tools
- NFC Tools Premium$1.99
Questions
Is MasterKey free?
Is Smart NFC Tools free?
Do MasterKey or Smart NFC Tools have ads?
Which is updated more often, MasterKey or Smart NFC Tools?
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